Shannon O'Donnel wearing a sweater
Keene in a green pullover
A sweater or pullover was a piece of clothing meant to keep the wearer warm while outside or inside during cold temperatures. It covered the upper body including both arms.
In 2000, Shannon O'Donnel wore a sweater in Alexandria Books. (VOY: "11:59")
In August 2151, Captain Keene of the ECS Fortunate wore a pullover in several shades of green color. (ENT: "Fortunate Son")
Jonathan Archer offered Keyla to get her sweater as it went chilly in the evening when he sat with her on his balcony on Risa. (ENT: "Two Days and Two Nights")
In 2368, after Lieutenant Commander Albert gave Cadet Wesley Crusher his sweater back following his son, Joshua Albert's death, Crusher remarked that he had loaned it to Albert during their skiing trip to Calgary, Canada, since Albert forgot his. (TNG: "The First Duty")
According to Elim Garak, the Galipotans made "magnificent sweaters." (DS9: "The Wire")
Caylem told Kathryn Janeway about his memories regarding the last letter to his wife. He remembered he went walking in the morning but it was very cold. But he wore his sweater. (VOY: "Resistance")
After reuniting with his former Starfleet Academy girlfriend Lieutenant junior grade B'Elanna Torres on the USS Voyager, Lieutenant Maxwell Burke asked Torres where his Academy sweater that he had given her had gone. (VOY: "Equinox")